Sequence Of Operation; Arc Initiation Settings - ESAB ESP-400C Installation, Operation And Maintenance Manual

SECTION 4

4.3 Sequence of Operation

Apply Power
PILOT
ARC
PRESET AMPS

4.4 Arc Initiation Settings

4-4
PANEL
REMOTE
HIGH
LOW
ACTUAL AMPS
Begin
Cutting
ESP 400C Plasma Power Source ESP 400C Plasma Power Source ESP 400C Plasma Power Source ESP 400C Plasma Power Source
1. Apply power by closing the line (wall) switch.
(The ESP-400C does not have an on/off
switch). The main power light will illuminate
and the fault light will flash and then go out.
2. Select the Panel/Remote setting.
3. Set pilot arc High/Low switch. (Refer to cutting
data in the torch manual.)
4. If using panel mode, view preset amps with the
ACTUAL/PRESET AMPS switch. Adjust current
until the approximate desired value is shown on
the ammeter.
5. Begin plasma cutting operation. This may
include manually setting up other options,
depending on the total plasma package.
6. If using panel mode, after cutting has begun,
adjust current to desired amount.
7. Check for fault light. If a fault light illuminates,
refer to troubleshooting section.
Note: The fault light flashes when the contactor is Note: The fault light flashes when the contactor is Note: The fault light flashes when the contactor is Note: The fault light flashes when the contactor is
first turned on signifying the DC Bus powered up first turned on signifying the DC Bus powered up first turned on signifying the DC Bus powered up first turned on signifying the DC Bus powered up
normally. normally. normally. normally.
The time to achieve full current can be adjusted to
suit your particular system. This feature uses 50%
of the cutting current to start, dwell and then
gradually (less than a second) achieve full current.
The ESP-400C is factory shipped with this feature
enabled. The default settings are:
Minimum Start Current
Start Current
Timing to achieve full current
Dwell Time
Operation
40A
50% of cut current
800 msec
50 msec